Method of aroma testing of cedar chests



June 9, 1931. E. c. CROCKER 1,808,833

METHOD OF AROMA TESTING CEDAR CHESTS Filed July 18, 1930 I L I H *"W Patented June 9, 193i ERNEST c; cnocxnn, OEBELMDNT MASSA ma mas; lassrenoni I is MnsN-n 'Assrd v- MENTS, TO THE LANE COMPANY, nae, A oonronA'rroiv tin-VIRGINI METHOD or AROMA TESTING or CEDAR classics 7 While I have, for the purpose of illustrating my invention, selected what is known to the trade as a cedar chest, it is, of course, obvious that my invention may with equal efliciency be embodied in wardrobes, chiflorobes, closets, household furniture, and other receptacles designed for the destroying ofthe clothes moth larvae found in clothing, furs, and similar articles-stored in such receptacles.

From experiments, conducted .over quite a long period the object of which was to produce a cedar chest that would destroy the clothes moth larvae, I discovered the fact that aroma thrown off by the aromatic cedarwood oil, found in aromatic cedar was effective in killing moth larvae of any age if the proper concentration could be developed, and I have fundamentals in se-.

also found that the two curing properconcentration ofaroma are to get enough cedarwood oil' into the chest which I am accomplishing by introducing enough cedar lumber to supply this oil and by making the chest sufficiently aroma tight.

By preventing this leakage and putting enough oil in the chest I could get-enough concentration to kill moth larvae of any age and that all of this prevents the necessity of having to have clothes cleaned to get them free of moth eggs and larvae, or beaten, or brushed, or sunned, all of which methods have free fabrics of moth infestation. The old type of cedar chest which was not aroma tight, according to United ment recommendations, would kill newly hatched moth worms up to half grown (three months old) but if a person would place "any fabrics into a chest that had more than half rown moth worms on them, they were so hard to kill that the cedar aroma concentration in the chest was not strong enough to kill them, but this I have been able to accomplish with my new aroma tight chest. The problem which I desired towork out was to destroy the moth larvae present in such articles, or hatching from eggs, that might have had deposited on them when they were stored away, as it has been difficult and expensive and, in fact, impract cal, to so clean every article stored as to insure the non-existence supply of various authorities to States Govern- Application filed'July 1a, 1930; iseriarnoh ieaesb.

ofmoth larvae or motheggs whenthe article 7 was stored away.

Experiments demonstrate the fact that the aroma of the cedar oil, which is in factlcedar oil in a highly gaseous or vapor state sus pended in the air, is extremely penetrating and that, if: the article infested with moth larvaecould be maintained in a receptacle for a siufficient'lengthof time wherethe cedar aro1na-was of sufficient density, all moth larvae would be completely destroyed. .The" problem, therefore, was to first obtain a sufficient amountuof cedar oil aroma, next to imprison this aroma in the receptacle so that the article would remain in an atmosphere of cedararoma of sufficient density the required length oftime to destroy the moths, and, second, to so imprison and maintain the basiccedar oil that'the required density f aroma would be supplied over along period of years to make the receptacle continuously effective. 7 1 v p It was found by experiment that cedar aroma, that is cedar'oll molecules in suspension in air, is approxlmately seven times as measured, is'quite sufficient to cause the vcedar aroma to escape from the receptacle through any hole, crevice or bottom of the chest, as the density is greater at the bottom, this pressure created. as heretofore explained, will cause it at, certain stages to escape regardless of the location of the leak. from the chest is also caused by the variation in temperature in the room outside as com pared to the air within the chest. 'I ascertained the approximate amount of cedar oil in the average red cedar board by weight a and I constructed the chest amount of red cedar for each cubic. inchcof Leakage or escape of the aroma 7 crack. And, while it will escape more rapldly from a hole atthe 1 with the proper storagei space. This will. give a sufficient quantity of cedar 'oil to produce aroma "of sufficientdensity:tobe effective in destroying 100, r

. years, provided as above, waste were prevented.

' of a cedar chest is proportionate to the chests.

I pended, and the chest closed.

' been my observation that fatty, resinous materials were active the aroma ofJcedar wood from thea r spaces of cedar chests, and that commonrosin is the duration of efficiencyand guarantee of. efficiency and duration of moths, provided the density of the aroma could be maintained, leakage prevented and -the escape of the cedar oil in the form of aroma could be largely confined to the inside of the chest so that it might not be wasted by escape outside into the room. I also found that this percentage of red icedar'to the cubic content of a receptacle would not only supply an aroma of suflicient density to d'estroy moths, but that it would continue to supply it over a long period'of.

My experiments conducted over-many years have proven thatthe moth killing efliciency amount of cedar oil p' esent in the closure and the aroma tightness of. the closure.

' In thedrawingsz ;1

7 Figure l is a perspective view of a cedar centage given may be varied within reasonablelimitsa Y The thus treated cheese cloth sheets are then placed in a cedar chest, preferably sus- The cloths are weighed from time to time during the test, to note how rapidly they pick up cedar aroma. I customarily record this increase in Weight as 15,28,40, or what. not milligrams per day for the cloths. It has Waxy, and in absorbing most active and. consistent absorbent for cethat leakage and phony,placing saidtreated fabric in a cedar ing said treated fabric of cedar chests,-

its weight colophony, placing said treated fabric in a cedar chest and closing the chest. .3. The method for aroma testing of cedar chests which consists in applying to a textile fabric approximately 5% of its weight colophony, placing said treated fabric in a cedar chest and closing the chest, and removing the fabric from the chest from timeto time and weighing it.

4. The method of aroma. testingofcedar chests which consists inapplying to a textile fabric approximately 5% of its weight colochest and closing the chest, removing the fabric from the chest from time to-tim a d weighing it, v

5. The method for testing of cedararoma testing of cedar chests, which consists in ap- V plying toa textile fabricjcolophony, suspend in the 'cedarchest," closing the chest, weighing the fabric and noting from time to time aroma picked up'by said treated fabric "6. The method for testing of cedar aroma of cedar chests which consists in coating a textile fabric with approximately 5% of its weight with rosin, suspendingsaid. coated fabric in a cedar chest, weighing the fabric, closing the chest, and noting from time to time the amount of cedar aromapicked up by said treated fabric.

7. The method for testing of cedar aroma which consists in usin cheese the amount of cedar: V

cloth sheets, coating said sheets with about 5% of their weight with rosin, suspending the sheets within the chest, weighing the fabric, closing the chest, and noting from time to time how rapidly said sheets pick up cedar aroma-.

In testimony whereof I 'aiiix my signature. i

ERNEST CROCKER-f dar aroma, and that common rosin, dispersed over a clothis eminently-practical and convenient means for absorbing cedar aroma from the air spaces of chests in such quantity be measured. a I

By'means of' my apparatus and method,

that .the aroma" density therein may readily mannfacturers of cedar chests'areenabled to test their chests for efliciency and probable efliciency. i v e What I claim'is: V 1.. In'the method for the aroma testing of cedar chests the step which consists in coating a textile fabric with approximately 5% of its weight of colophony andplacing said I V coated fabric chest.

in theqchest and closing the 2; Inthe method for aroma testing oflce- "dar chests the step whichconsists in applying'to a textilefabricapproximately 5% of sell them with a 

